<template>
  <div class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">硅谷外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{on: 'phone' === loginType}" @click="loginType = 'phone'">短信登录</a>
          <a href="javascript:;" :class="{on: 'pwd' === loginType}" @click="loginType = 'pwd'">密码登录</a>
        </div>
      </div>
      <div class="login_content">
        <form>
          <div :class="{on: 'phone' === loginType}">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" v-model="phone">
              <button class="get_verification" :class="{right_phone: countdown === 0}" @click="getPhoneCode()">
                获取验证码{{countdown > 0 ?'('+ countdown +')':''}}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="6" placeholder="验证码" v-model="code">
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{on: 'pwd' === loginType}">
            <section>
              <section class="login_message">
                <input type="tel" maxlength="11" placeholder="手机/邮箱/用户名" v-model="account">
              </section>
              <section class="login_verification">
                <input :type="showPwd?'text':'password'" maxlength="8" placeholder="密码" v-model="pwd">
                <div class="switch_button" :class="showPwd ? 'on':'off'" @click="showPwd = !showPwd">
                  <div class="switch_circle" :class="{right: showPwd}"></div>
                  <span class="switch_text">{{showPwd ? 'abc':'...'}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha">
                <img class="get_verification" src="http://localhost:3000/captcha" ref="captcha" @click="getCaptcha">
              </section>
            </section>
          </div>
          <button class="login_submit" @click="login()">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back">
        <i class="iconfont icon-jiantou2"></i>
      </a>
    </div>
    <AlertTip :alert-text="alertText" v-show="showAlert" @closeTip="closeTip"/>
  </div>
</template>

<script>
  import {reqPwdLogin, reqSendCode, reqSmsLogin} from "../../api";
  import AlertTip from "../../components/AlertTip/AlertTip";
  import {RECEIVE_USER_INFO} from "../../store/mutation-types";

  export default {
    name: "Login",
    components: {AlertTip},
    data() {
      return {
        loginType: 'phone',
        phone: '',
        code: '',
        showPwd: true,
        account: '',
        pwd: '',
        captcha: '',
        countdown: 0,
        alertText: '', // 弹窗提示消息
        showAlert: false // 是否显示提示框
      }
    },
    methods: {
      // 获取手机验证码
      async getPhoneCode() {
        if (this.phone) {
          if (this.countdown === 0) {
            // 置灰，倒计时
            this.countdown = 30;
            let intervalId = setInterval(() => {
              this.countdown--;
              if (this.countdown === 0) {
                clearInterval(intervalId)
              }
            }, 1000)
            await reqSendCode(this.phone)
          }
        } else {
          this.showTip("请先输入手机号")
        }
      },
      // 刷新图形验证码
      getCaptcha() {
        this.$refs.captcha.src = 'http://localhost:3000/captcha?tiem=' + Date.now()
      },
      // 登录
      async login() {
        let result;
        // 手机登录
        if (this.loginType === 'phone') {
          if (this.code && this.phone) {
            result = await reqSmsLogin(this.phone, this.code)
          } else {
            this.showTip('请输入手机号和验证码')
            return
          }
        }
        // 密码登录
        if (this.loginType === 'pwd') {
          if (this.account && this.captcha && this.pwd) {
            let {name, pwd, captcha} = this
            result = await reqPwdLogin({name, pwd, captcha})
          } else {
            this.showTip('请输入账号密码')
            return
          }
        }
        // 登录结果
        if (result.code === 0) {
          console.log(result)
          await this.$store.dispatch('saveUserInfo', result.data)
          // 跳转到我的
          await this.$router.replace('/profile')
        } else {
          this.showTip(result.msg)
        }

      },
      closeTip() {
        this.showAlert = false;
        this.alertText = ''
      },
      showTip(text) {
        this.showAlert = true;
        this.alertText = text
      }
    }
  }
</script>

<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixins.styl"
  .loginContainer
    width 100%
    height 100%
    background #fff

    .loginInner
      padding-top 60px
      width 80%
      margin 0 auto

      .login_header
        .login_logo
          font-size 40px
          font-weight bold
          color #02a774
          text-align center

        .login_header_title
          padding-top 40px
          text-align center

          > a
            color #333
            font-size 14px
            padding-bottom 4px

            &:first-child
              margin-right 40px

            &.on
              color #02a774
              font-weight 700
              border-bottom 2px solid #02a774

      .login_content
        > form
          > div
            display none

            &.on
              display block

            input
              width 100%
              height 100%
              padding-left 10px
              box-sizing border-box
              border 1px solid #ddd
              border-radius 4px
              outline 0
              font 400 14px Arial

              &:focus
                border 1px solid #02a774

            .login_message
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff

              .get_verification
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                border 0
                color #ccc
                font-size 14px
                background transparent

                &.right_phone
                  color: black

            .login_verification
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff

              .switch_button
                font-size 12px
                border 1px solid #ddd
                border-radius 8px
                transition background-color .3s, border-color .3s
                padding 0 6px
                width 30px
                height 16px
                line-height 16px
                color #fff
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)

                &.off
                  background #fff

                  .switch_text
                    float right
                    color #ddd

                &.on
                  background #02a774

                > .switch_circle
                  //transform translateX(27px)
                  position absolute
                  top -1px
                  left -1px
                  width 16px
                  height 16px
                  border 1px solid #ddd
                  border-radius 50%
                  background #fff
                  box-shadow 0 2px 4px 0 rgba(0, 0, 0, .1)
                  transition transform .3s

            .login_hint
              margin-top 12px
              color #999
              font-size 14px
              line-height 20px

              > a
                color #02a774

          .login_submit
            display block
            width 100%
            height 42px
            margin-top 30px
            border-radius 4px
            background #4cd96f
            color #fff
            text-align center
            font-size 16px
            line-height 42px
            border 0

        .about_us
          display block
          font-size 12px
          margin-top 20px
          text-align center
          color #999

      .go_back
        position absolute
        top 5px
        left 5px
        width 30px
        height 30px

        > .iconfont
          font-size 20px
          color #999
</style>
